Which feature could help advertisers determine if the clicks they are receiving on the Google Display Network are valuable?
- Position Preference
- IP Exclusion Tool
- Conversion Tracking
- Keyword diagnosis
Conversion tracking is a free tool that shows you what happens after a customer clicks on your ads — whether they purchased a product, signed up for your newsletter, called your business, or downloaded your app. When a customer completes an action that you’ve defined as valuable, these customer actions are called conversions.
With AdWords conversion tracking, you can see how effectively your ad clicks lead to valuable customer activity, such as website purchases, phone calls, app downloads, newsletter sign-ups, and more.
Read more here: https://support.google.com/adwords/answer/1722054?hl=en